What's missing to make D2 feature complete?

[Dicebot via Digitalmars-d]

On Sunday, 21 December 2014 at 12:26:04 UTC, Jacob Carlborg wrote:
> On 2014-12-21 10:46, Dicebot wrote:
>
>> - better user-defined type support (any built-in type must be 
>> possible
>> to emulate via user aggregate)
>
> Any specifics to achieve this?

Stuff that immediately comes to my mind:

  - some way to define implicit conversion from literals (done at 
CT)
  - either http://wiki.dlang.org/DIP63 or some other solution to 
define tuple-like entities
  - solve the issue with impossibility of stripping head const for 
user-defined container types same as it is down for arrays